In the tradition of Robin Cook, Wyler takes us behind the scenes to show us things the medical establishment doesn’t want us to see. Dead Ringer builds a high-speed plot on a startling but all-too-plausible premise. This is the stuff nightmares are made of.

-Joseph Finder, New York Times bestselling author of Paranoia and Buried Secrets


As in Allen Wyler’s book, Dead RingerDeadly Errors will captivate you from page one. Allen Wyler’s books make me want to read with one eye open – that is how realistic his stories are. He picks the reader up and drops them right smack in the middle of each situation as you race against time to figure our the plot.

Donna McBroom-Theriot, Novels Alive.TV


Deadly Errors is a wild and satisfying ride! An up-all-night pass into troubled places that only hardworking doctors know about, a turbulent world of trusting patients and imperfect humans struggling with the required image of perfection. Only a gifted surgeon could craft such a wild and wonderful medical thriller!

-John J. Nance, New York Times bestselling author of Pandora’s Clock


It is obvious that he uses his experience to give us a credible medical story. As a scientist, I appreciated that he gave a plausible medical premise for the story.

Dr. Alan Viau


Changes is a page-turning, heart-rending exploration of life and death, fathers and sons. Dr Wyler nails it.

– Robert Ferrigna, New York Times bestselling author of The Girl Who Cried Wolf and Sins of the Assassin